Multi-Rail RM System modules

The basic components of the Multi-Rail system are a base rail (RM-), clamping modules (RMC-) and stopper modules (RMS-).To locate and position the workpiece side guides (RMG-) and parallels/riser blocks (RMP-) are used.

D-size (12 mm or 1/2" bolt) and B-size (M8 or 5/16" bolt) clamps are most commonly used in the Multi-Rail RM system.

There are various clamp modules - RMC-DR, RMC-DS, RMC-DT, RMC-BS.

In the RMC-ab code format a=size and b=jaw type.

Quick adjustable stopper plate PDQ-S1

Files to download

Dimensions

STEP (3D)

This “speed plate” option enables users of Multi-Rail RM to move clamp modules on the rail into a different position in just a few seconds.It also replaces one stopper module, and works with RMC-DS and RMC-DR.Please notice this module holds clamping force in one direction only.

RMC-DR

This clamp module features a D-series clamp with two serrated jaws.

Files to download

Dimensions

STEP (3D)

RMC-DS

This clamp module features a D-series clamp with two smooth jaws (S).

In the clamp modules RMC-DSx, one jaw is smooth and another jaw is of another type. For example, in RMC-DSR one jaw is serrated.

Code

Dim.

STEP

RMC-DS

RMC-DSR

DOTFORCE clamp module RMC-DS-F

A Clamp module with clamping force verification

Files to download

Dimensions

STEP (3D)

OK-VISE’s novel DOTFORCE concept is a part of the Multi-Rail RM system and is based on a simple visual red dot in the clamp module. The red dot disappears when the clamping force is high enough.The parts of the module are

DK2-VTI wedge

DOTFORCE bolt

UDP-RM1 Plate

T-nut

Smooth jaws*

Please note that the jaws can be easily changed to any other combination.

RMC-DTx

The clamp module RMC-TTx features a D-series clamp with two jaws for an additional piece (T).

In the clamp modules RMC-DTx, one jaw is for additional piece jaw and another one is of another type. For example, in the RMC-DTS one jaw is smooth.

Code

Dim.

STEP

RMC-DT

RMC-DTS

RMC-DTR

RMC-BR

This clamp module features a B-series clamp with two serrated jaws.

Files to download

Dimensions

STEP (3D)

RMC-BS

This clamp module features a B-series clamp with two smooth jaws.

Files to download

Dimensions

STEP (3D)

RMC-BSR

This clamp module features a B-series clamp with one smooth (S) and one serrated jaw (R).

Files to download

Dimensions

STEP (3D)

T-slot sets for clamps

Some clamp types for the RM system already have a code, for example, RMC-DR or RMC-DS. Code is defined as a set of letters and numbers given to a product, where the letters and numbers are abbreviated attributes that distinguish one product from another as size, product type, jaw type, etc. If you cannot find a suitable product code from our price list, please create your own code.

All B- and D-series clamps and combinations are suitable for the Multi-Rail RM system.

Below are some examples of how to read the code: Adapter RMA-D1 includes a T-slot nut and bolt for D-size clamps.Adapter RMA-BP1 includes a T-slot nut, bolt and riser plate to lift up the clamp (B-size).

Please note that using B-series clamps on Multi-Rail without a plate is not recommended.

RMA-D1RMA-BP1RMA-B1

Code

Dim.

STEP

RMA-D1

RMA-BP1

Applications

Rotation stop plate PDR-1

Files to download

Dimensions

STEP (3D)

This plate is used with D-series clamps to prevent the clamp rotating on the rail.

Base rail RM common properties

Compared to similar systems on the market, the OK-VISE Multi-Rail base is the most stable due to its steep serration profile. It has been designed for D- and B-series clamp modules and can withstand up to 4 tonnes clamping force. The pitch of the serration is 2,5 mm, and the size of the RM profile is 44 x 50 mm.The accuracy from every serration to the positioning hole is ± 0.01 mm.

Base rail RM-200

Base rail RM-300

Files to download

Dimensions

STEP (3D)

STEP (3D) DETAILS

This length rail is most commonly used to replace old-fashioned machine vises.

Base rail RM-400

On Multi-Rail base rails L=400...700 mm, positioning hole is the second one from the end of each rail. Please note that the end of the rail is different from the start. The numbering of the scale starts from the left.

Files to download

Dimensions

STEP (3D)

STEP (3D) DETAILS

Base rail RM-500

Files to download

Dimensions

STEP (3D)

STEP (3D) DETAILS

A good universal rail for VMC and HMC machining.

Base rail RM-600

Files to download

Dimensions

STEP (3D)

STEP (3D) DETAILS

This rail length is very popular on tooling blocks.

Base rail RM-700

Files to download

Dimensions

STEP (3D)

STEP (3D) DETAILS

This is the longest standard rail produced by OK-VISE. Special length rails (also longer than RM-700) are also available.

Multi-Rail RM stopper modules (RMS-)

The same jaw types used in clamps are available in the stopper modules:

Serrated (R)

Smooth (S)

Diamond-coated (D)

Additional piece models (T)

Grip models (G)

Self-aligning (B)

Machinable (M)

Equipped with vertical V-slot (V)

Equipped with horizontal V-slot (H) etc.

Recommended installation torque 50..100 Nm

Please also notice, that several types of threads and notches can be machined to stoppers to help integration with external components ( see more : machining options )

Additionally, different stopper sizes are manufactured by OK-VISE.

Files to download

Installation

RMS-S, RMS-Sn

Code

Dimensions

STEP

RMS-S

RMS-S2

RMS-S3

The most common stopper is RMS-S, which has two smooth and nitrided jaws. It is optimal for the second setup, when OK-VISE clamps are used with full force. Friction level is adequate even for roughing and other types of machining where high forces occur.

The accuracy from every serrration to the jaw surface is ± 0.01 mm.

RMS-S2 is more narrow than RMS-S, about the size of a B-series clamp.

RMS-S3 is higher than RMS-S.

RMS-SRMS-S2RMS-S3

Grip stopper RMS-G4

RMS-G4 is a grip model, where both jaws posses a knife-edge grip pattern. The jaws are nitrided.

Grip stopper RMS-G4S

Files to download

Dimensions

STEP (3D)

RMS-G4S

RMS-G4S is a grip model, one jaw possessing a knife-edge grip pattern while the other jaw is smooth. The jaws are nitrided.

RMS-R

Files to download

Dimensions

STEP (3D)

This stopper type has two round, serrated contact areas which hold both big and small workpieces firmly in the correct position.

The accuracy from every serrration to the jaw surface is ± 0.25 mm.

RMS-SR

Files to download

Dimensions

STEP (3D)

Stoppers that have -ab at the end of the product code are in most cases combinations of two different jaws.

For example, in the RMS-SR model, one jaw is serrated (R) and another one is smooth (S).

RMS-R2

This stopper type has a serrated contact area on both sides of the stop module. The contact area is nitrided.

One popular variation is a stopper RMS-SR2 which has one serrated (R2) and one smooth (S) jaw.

RMS-SR2

This stopper has one jaw that is serrated ( like in RMS-R2) and the other is smooth.

RMS-M, RMS-MS, RMS-Mx

Code

Dim.

STEP

RMS-M

RMS-MS

RMS-MSThese are machinable stopper models which are especially suitable for machining of complex workpieces, or when extreme accuracy is needed and product-specific jaws are used for machining.

RMS-M has two extended jaws that are machinable. Furthermore, all combinations can be machined because these models are made of the relatively soft material (HRC 30, not hardened or nitrided). In the RMS-MS model, one jaw is of the "normal" length, and normally it is smooth. For machining purposes this model is slightly bigger in size.

Also many other variants of combinations can be made, so "x" can be =R ( serrated), V (vertical slot) etc.

RMS-D, RMS-Dx

Code

Dim.

STEP

RMS-D

RMS-DS

These stopper modules have at least one jaw which is diamond coated (D). In the RMS-D model both jaws have a diamond coating, while RMS-DS has one jaw that is smooth.

The accuracy from every serrration to the jaw surface is ± 0.25 mm.

RMS-G, RMS-Gx

Code

Dim.

STEP

RMS-G

RMS-GS

RMS-G is a grip model with two HSS pins that penetrate into the workpiece, leaving tiny marks on it. The friction is much higher than that of using the standard serrated jaw, against soft steel the friction co-efficient factor is up to 0,8.

Model RMS-GS has one grip jaw and one smooth jaw.

RMS-T, RMS-Tx

Code

Dim.

STEP

RMS-T

RMS-TS

RMS-TR

In this stopper module the same additional pieces can be used as in D-series low-profile clamps. In this stopper module the same additional pieces can be used as in D-series low-profile clamps.

RMS-T has two additional pieces jaws. RMS-TS has one smooth jaw (photo) and one additional piece jaw. In the RMS-TR module one jaw is serrated and another one is an additional piece jaw.

RMS-TRMS-TS

RMS-H, RMS-Hx

Code

Dim.

STEP

RMS-H

RMS-HS

RMS-H

This model has a horizontal V-shape jaw to hold small round-shaped workpieces or bars.

RMS-H has two such jaws. In the RMS-HS module one jaw is smooth and another one - V-shape.

RMS-V, RMS-Vx

Code

Dim.

STEP

RMS-V

RMS-VS

RMS-VSThis model has a vertical V-shape jaw to hold round-shaped workpieces of various sizes.

The optimal workpiece sizes are given in the Dimension drawings (see Dim. in the table above). Please note that when machining a workpiece with a diameter larger than maximum given in the Dimensions drawings, there is a line contact between the jaw and the workpiece, and the jaw is likely to leave marks on the workpiece surface.

RMS-V has two such jaws, RMS-VS has one smooth jaw (photo).

Multi-Rail RM parallels (RMP-) and riser blocks

Like side guides, Multi-Rail RM parallels are used to assist in positioning workpiece on the Multi-Rail. Multi-Rail RM parallels are placed on the rail, thus protecting the rail's serration.

Files to download

Installation

Magnet parallel RMP-MG1

Files to download

Dimensions

STEP (3D)

A parallel plate 5x15 mm in size with a width of 44 mm.On one side there are two magnets, so this parallel plate can be easily fastened on a stopper (height 15 mm) or on a fixturing base such as Multi-Rail (height is then 5 mm).

This version is ground.

RMP-1

RMP-1 is the most common parallel model.

Files to download

Dimensions

STEP (3D)

RMP-1H8

RMP-1H8 is a 8 mm high variation of RMP-1.

Files to download

Dimensions

STEP (3D)

RMP-2

Files to download

Dimensions

STEP (3D)

RMP-J1

RMP-J1 is equipped with a snap-on spring to speed up assembly process.

Files to download

Dimensions

STEP (3D)

Multi-Rail RM side guides (RMG-)

Side guides are designed to assist in positioning the workpiece on the Multi-Rail. The workpiece is pressed sideways (as regards the clamping force) against the guide, either manually or using a spring guide.

Magnet side guide RMG-M1

Files to download

Dimensions

STEP (3D)

A combination of side guide RMG-1 and magnet M-1. This side guide can be moved rapidly from one place to another.Using this type of side guide users can adjust each side guide for a specific product and keep the guide ready for the next production batch.

RMG-1

Files to download

Dimensions

STEP (3D)

Side guide offset from the side of the rail is from -5 mm to +30 mm.

Load assistant

Files to download

Dimensions

STEP (3D)

Load assistant RMGS-4x2 holds the workpiece on the rail while operator is loading the workpieces. This saves time and muscles. Parallels with min. 8 mm height are recommended to be used with this unit (like RMP-1H8 in the photo right)

4 pcs of metal pins posses 100 N spring power each.

Applications

Side guide magnet M1

A magnet block with M6 thread. This is originally designed as an option for side guide RMG-1.

Machining options

The Multi-Rail dimensions can be also modified. OK.VISE has predefined set of ready machining options, which are available on request. Usually, ordering of the special machining option slightly increases delivery time.

M6X4-1

This set of threads (4 pcs of M6) is typically used with Multi-Rail RM stoppers, in this example case with RMS-SThen, for example side RMG-1 can be installed to the stopper instead of Mult-Rail base.

M-N1

In the picture on the right M-N1 stands for machining of two sides with max 4x9 mm notch.Then, both stopper widht and the widht of the upper part of the rail base will be 36 mm.

M-T1

Four slots for keys, where the lower part of the key chosen by the T-slot widht.

Using the slot and keys ( not included ) the module - typically Multi-Rail base - can be installed parallel or perpendicular to T-slots.

Measures to be defined at order :

Slot widht : 18 or 20 mmSlot midpoint position

Multi-Rail RM adapter sets

The following adapter sets are recommended for use in the installation works of the Multi-Rail systems on the different platforms.

Platform

RM-100

RM-200

RM-300

RM-400

RM-500

RM-600

RM-700

Blank

AD-RM-2

AD-RM-3

AD-RM-5

AD-RM-6

AD-RM-7

AD-RM-8

AD-RM-9

Grid M12

AD-RM-2

AD-RM-3

AD-RM-5

AD-RM-6

AD-RM-7

AD-RM-8

AD-RM-9

The set AD-RM-n includes n pieces of bolts, where 2 bolts are type OKSB12-45 and the remaining ones (n-2 pieces) are of type DIN912M12X45.

Fastening clamps

This is an option which is typically used to fasten components to a base (typically a T-slot table) in cases where the component cannot be bolted directly.

ICI-12 For Multi-Rail RMIC1-12-C For Combo-Rail

Both of these can be used with M12 and 1/2" bolts

In the picture above the clamps have a hole for M16 bolts ( ICI-16 )

Threads and positioning holes on the platforms

When a Multi-Rail system is installed on the grid or blank platform, most typical way of installation is to use two shoulder bolts for positioning and DIN912 bolts for remaining holes.

Inserts and platforms are available through the OK-VISE global distribution network.

DIGIFORCE OPTION TO MULTI-RAIL RM SYSTEM

OK-VISE Oy has again taken a major step in fixturing technology

Particularly when clamping is automated, most typically by using robots to load work pieces into machining centers, verifying the proper clamping force has been a challenge.In manual clamping systems torque measurement is often used. This is a straightforward and easy method, but the relation between the torque and the actual clamping force can be inaccurate.

With hydraulic clamping oil pressure is easy to measure. However, even here there are several other variables that influence the clamping force. To name just one example, when the hydraulic cylinder is at the bottom of the stroke the oil pressure goes up, but the work piece is not necessarily clamped at all!

The approach that OK-VISE has taken is to integrate clamping force measurement directly into the stopper of the Multi-Rail RM system. Multi-Rail is part of the OK-VISE Fixturing Concept, which includes several modular fixturing systems for various purposes.

This digital concept is designed to be an integral part of any system where verifying clamping force is essential.